206485081 has 4 divisors (see below), whose sum is σ = 225256464. Its totient is φ = 187713700.

The previous prime is 206485067. The next prime is 206485087. The reversal of 206485081 is 180584602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206485081 - 2¹³ = 206476889 is a prime.

It is a super-2 number, since 2×206485081² = 85272177351153122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206485087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9385675 + ... + 9385696.

It is an arithmetic number, because the mean of its divisors is an integer number (56314116).

Almost surely, 2^206485081 is an apocalyptic number.

It is an amenable number.

206485081 is a deficient number, since it is larger than the sum of its proper divisors (18771383).

206485081 is a wasteful number, since it uses less digits than its factorization.

206485081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18771382.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 206485081 is about 14369.5887554237. The cubic root of 206485081 is about 591.0572644812.

The spelling of 206485081 in words is "two hundred six million, four hundred eighty-five thousand, eighty-one".